1540816468 has 6 divisors (see below), whose sum is σ = 2696428826. Its totient is φ = 770408232.

The previous prime is 1540816439. The next prime is 1540816489. The reversal of 1540816468 is 8646180451.

It can be written as a sum of positive squares in only one way, i.e., 1275061264 + 265755204 = 35708^2 + 16302^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192602055 + ... + 192602062.

Almost surely, 2^1540816468 is an apocalyptic number.

It is an amenable number.

1540816468 is a deficient number, since it is larger than the sum of its proper divisors (1155612358).

1540816468 is a wasteful number, since it uses less digits than its factorization.

1540816468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385204121 (or 385204119 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 1540816468 is about 39253.2351278210. The cubic root of 1540816468 is about 1155.0043959529.

The spelling of 1540816468 in words is "one billion, five hundred forty million, eight hundred sixteen thousand, four hundred sixty-eight".